Obs. : 2025-05-15
Planet	Ly alpha (photons/cm^2/sec)
Mercury    7.844e+08
Venus      7.873e+08
Earth      7.937e+08
Mars       8.153e+08
Jupiter    7.833e+08
Saturn     7.873e+08
Uranus     7.839e+08
Neptune    7.873e+08
Pluto      7.554e+08